un- prefix Meaning in Cambridge American English Dictionary
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Meaning of "un-" - American English Dictionary

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un-prefix

 us   /ʌn/
used to add the meaning "not," "lacking," or "the opposite of" to adjectives, adverbs, verbs, and nouns: unaided; unalterable; unaltered; unanticipated; unappreciated; unapproachable; unassigned; unassisted; unattainable; unbiased; uncommunicative; unconfined; unconvinced; uncultured; undefined; undiminished; uneconomical; unlicensed; unmodified; unmonitored; unmotivated; unobtainable; unpublished; unregulated; unrestricted; unrestrictive; unscheduled; unstressed; unstructured; unsustainable
(Definition of un- prefix from the Cambridge Academic Content Dictionary © Cambridge University Press)
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